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. METALLIC CEILINGvl l y No. 376,926. Patented Ja,11. 24, 1888,

UNITED f STATESv PArInxIT OFFICE. ,y

oHAnLEs'THUENEn, or surnoms, M'Issouni.

METALLIC CEILING.

SPECIFICATION forming part ef Letters Patent No. svcpzcLdated January 24, 188s. f

i g Application filed October 20, 1887. Serial No. 252,909. (No model.) 'i

To all whom itmtay concern:

Be itknown that I, CHARLES THUENEIgof the city of St. Louis, in theState of Missouri,

Vadjoining section or sheet.

vhave invented a certain new and useful Inlprovement in Metal Ceilings, of which the following isa full, clear, and exact description,

' reference being had to the accompanying drawings, forming part of this specification, and in which- Figure I is a View showing a number of sec"- tions of my improved ceiling. Fig. IIis aseotion taken on line II II, Fig. I. Fig. III is a detail perspective vview showing part of one edge of one of the sections or sheets. Fig. IV is a similar view of the adjacent edge of the Fig. V is an 'enlarged inner` view of one of the cross-strips. Fig. VI is a section of same, taken on line VI VI, Fig. I. Fig. VII shows a slight modification of the manner of connecting the adja-` cent edges of the sheets or sections. Fig. VIII islaview of theceiling, showing a rosette applied.- Fig. IX is a view showing thegupper ends of the rosette-fastening. Fig. X is 'a section taken 'on lin'e X X, Fig. VIII. Fig. XIII4 is a view ofthe rosette with the screw omitted.

' Figs. XI and XII are respectively sections kmay be made of any preferred,shape.

` i' metal, which are shown of square `form, but

which may be of any preferred shape which is bounded by straight'sides or edges.

At one'side of each plate 1` is a rib, which As shown, it consistsof three sides, 2, 3, and 4. The edge of 4 is turned inward 'in a ange, 5,

whichis curved outward and extends in a,

' flange, 6, and then downward at 7, and extends ina flange, 8, whose outer edge may be turned upward and outward in a flange, 9. The opposite edge, 10, of the plate may be unbentor turnedv up in a dange,-as shown in Figs. n, vn, and XI. Theshet ismedefwv Y fast to the joistll by nailsff12, which pass,v`

through the angle 7. y(See Figs. II, VII, andy XI.) When a plate has been Vastenedjinposition, the edge 10 of the next plate jis placed on Vthe ange, whichforms a ledge, andl as the other edge ofythe plate is lifted to the t' Vjoist theplate is broughtY in contact' withthe edge of the flanges, which bears on'theplate and holds the` edge 10 down hard upon the ledge 5. The flange 8 forms afspringfwhich bears upon the plate withV sufficient pressurei Ato insure a tight joint between the edge 10 and flange l5. `It will be seen that one edgeof each plate isnailedto the joist and the other edge supported on the ledge 5 yofthe next plate, and thus a line of plates mayIeXtend across ,the ceiling.4 Another line being made beside it would leave an open crack, 13, (see Fig. 1,) where the edges meet.y To close this open crack and form a rib on the ceiling similar to the rib 2 3 4 of the plates 1,I bendl plates 141,ofmetal,into the form shownin Figs,`

V and VI. These plates have parts-15, 16,`

and 17, similar, respectively, to the Vparts 2, Y ;l v

3, and 4 of the plates l,` and have lips y1`8,Which are-made to tightly clasp. the edges ot-the' platesl at 13. (See Fig. VI.) The ends of the plates 14 are made tent .the sides 2 4 of the ribs of plate 1. At the intersections of,

the ribs will .be openings 19,A as seen in Figs. I, X, XII, and- XIII. To make anish at thesepoints, I kuse'rosettes 20, which I secure in `place by means of clips l21.\Ihese clips are made with lips 22,'that engage the'ends of the parts 3 of the ribs 2 3-4 The clipshyave parts 23, adapted to be clinched against the' under sides of the rosettes,as seen in Fig.

XIII.; In order to cover up' the clinched ends 23, the Vstein 24 of f a'knob, 25, may bedriven inrbetween the clips 20. v (SeeFigs. VIII, IX,

and X.) The stem 23 should be rougheed, tol` l hold it tight when inserted; Y

Where it is desired to place Yrosettes upon the ribs or other parts ofthe ceiling, they mayl be held to the same byclips 21 in the manner before described, the clips being inserted-in4 an aperture, 26, which isshowninone ofthe ribs in Fig. XV.

In the modification ledge -5 is not made horizontal, but isinclined,

showin rig. .XVI the' edge of the plate 1 which is nailed to the joist,

it is made upon the edge 10 of the plate, and serves to hold the edge 10 firmly down on the 'ledge 5 in the'same manner as if upon the other edge ofthe plate.

In the modification shown in Fig. XVIII the two modifications shown in Figs. XVI and XVII are combined, as will be clearly seen Wit-hout further description.

In Fig. VII is shown the means for the support of the edges 10 of two plates 1 where they are in near proximity. This support in this case consists of a rib, 2 3 4, with a ledge, 5, on cach side and flanges 6 and 8, forming means for attachment to the joist, and the spring for holding the edge 10 tight to the ledge 5, as before explained. f

I claim as my invention-a 1. A metal ceiling-plate having one edge shaped to form a rib and adapted for nailing to a joist, and having a ledge thereon over the rib for the support of the opposite edge, 10, of the next plat-e7 and a spring-flange projecting beyond the ledge and adapted to press the edge 10 upon the ledge, substantially as and for the purpose set forth.

2. The combination of the plates 1 and 14, a rosette, 20, and clips 21, adapted to engage the plates and the rosette, substantially as set forth.

3. rIhe combination of the plates 1 and 14, arosette, 20, a clip, 21, and a knob, 25, all constructed and arranged substantially as set forth.

4. In a metallic ceiling, a plate having the bends 2, 3, 4, 6, 7, 8, and 90u one edge, and a second plate having an edge, 10, substantially as set forth.

5. In a metallic ceiling, in combination with plates and rosettes, the fastenings 21, bent substantially as shown and described.

GEO. H. KNIGHT, J os. WAHLE. 

